plunge vs scoot

plunge is a noun but scoot is not a noun.

Word	Noun	Adjective	Verb	Adverb
plunge	Yes	No	Yes	No
scoot	No	No	Yes	No

As verbs, scoot is a hypernym of plunge; that is, scoot is a word with a broader meaning than plunge:

Other hypernyms of plunge include dart, dash, flash, scud, shoot.

plunge (noun)	scoot (noun)
a brief swim in water
a steep and rapid fall

plunge (verb)	scoot (verb)
begin with vigor	run or move very quickly or hastily
devote (oneself) fully to
cause to be immersed
immerse briefly into a liquid so as to wet, coat, or saturate
thrust or throw into
fall abruptly
drop steeply
dash violently or with great speed or impetuosity